Well maybe just dont fight 3 opponents at the time? It is pretty easy to do, using stealth, ambushes, overkills to replenish stamina. Lona faster than all of her enemies except may be for wolves, it is easy to outrun and hide from enemies. Its kinda point of the game, little girl, not warrior type, she is not expected to beat grown men in fair open fight.
First of all...replenish with overkills...those happen rarely(unless you cheat to get the bloody mess trait or somehow grind to lvl 40 without fighting ever) it replenishes next to no stamina(just 2-3 hits worth of it) and needs you to be at least lvl 10 again I must somehow reach that without fighting while balancing the stamina/food/money/mood mechanics.
And the ambushes give you what? 1 hit against the enemy before he starts mauling you like nothing happened or chasing you around you can escape most certainly(unless there is an alarm mechanic) but then what?you get no expirience and lost some extra stamina that you simply can't afford to loose
Second I mean 3 opponents without resting, and even then well good luck going through the rescue gray rat's lady running around that way.
It's easy to stealth your way to the room where she is guarded but after that you have to fight through not one not two,but five human enemies at that point you are lucky if you have a bit more than half your stamina to spare(always if you are not cheating by saveediting stamina/health potions). there is a tight corridor you have to pass and it all ends up in sheer luck.If most of the guards attack grey rat you might just make it crawling to the exit after fighting one of them,unless the blond woman decided to get surounded and die, and at that point the game is lost anyway. But wait there is more the door is guarded by exlosive mines and you can't trigger them unless you are close enough to throw a rock at, if you are still in the stealth section then the guards are alarmed and you are screwed so it has to happen on the fighting section of the mission preveting you from "just running away".
Same thing happens when rescuing the Merchant's daughter from the orc lair where you MUST fight at least 2 big orcs and 1-2 smaller ones in order to save her,because if you activate her "escape" mode, she crawls slowly and if living orcs capture her they simply rape her to death and you loose the quest.
As for the trading and resource balancing system I insist on that(and besides I'm not the only one to do so in this forum alone).
Also you forget that you have 100 days to finish the game, days that pass by like water on a stream,and each day increases the danger meter so you don't have the luxury of going at it slowly, the micromanagement aspect of the game as such is really poorly implemented and needs a lot of work because as is, it is just ruining most of the game's fun for most people.